diff --git a/pam-1.0.91-std-noclose.patch b/pam-1.0.91-std-noclose.patch
index e08366f..b1a4af8 100644
--- a/pam-1.0.91-std-noclose.patch
+++ b/pam-1.0.91-std-noclose.patch
@@ -42,8 +42,17 @@ diff -up Linux-PAM-1.0.91/modules/pam_unix/pam_unix_passwd.c.std-noclose Linux-P
  
 diff -up Linux-PAM-1.0.91/modules/pam_unix/pam_unix_acct.c.std-noclose Linux-PAM-1.0.91/modules/pam_unix/pam_unix_acct.c
 --- Linux-PAM-1.0.91/modules/pam_unix/pam_unix_acct.c.std-noclose	2009-03-03 14:56:01.000000000 +0100
-+++ Linux-PAM-1.0.91/modules/pam_unix/pam_unix_acct.c	2009-03-13 17:33:21.000000000 +0100
-@@ -106,10 +106,8 @@ int _unix_run_verify_binary(pam_handle_t
++++ Linux-PAM-1.0.91/modules/pam_unix/pam_unix_acct.c	2009-03-17 15:08:51.000000000 +0100
+@@ -100,16 +100,17 @@ int _unix_run_verify_binary(pam_handle_t
+ 
+     /* reopen stdout as pipe */
+     dup2(fds[1], STDOUT_FILENO);
++    /* and replace also the stdin so we do not exec the helper with
++       tty as stdin, it will not read anything from there anyway */
++    dup2(fds[0], STDIN_FILENO);
+ 
+     /* XXX - should really tidy up PAM here too */
+ 
      if (getrlimit(RLIMIT_NOFILE,&rlim)==0) {
        if (rlim.rlim_max >= MAX_FD_NO)
          rlim.rlim_max = MAX_FD_NO;
diff --git a/pam.spec b/pam.spec
index bf7a8f1..d88e1b3 100644
--- a/pam.spec
+++ b/pam.spec
@@ -3,7 +3,7 @@
 Summary: An extensible library which provides authentication for applications
 Name: pam
 Version: 1.0.91
-Release: 2%{?dist}
+Release: 3%{?dist}
 # The library is BSD licensed with option to relicense as GPLv2+ - this option is redundant
 # as the BSD license allows that anyway. pam_timestamp and pam_console modules are GPLv2+,
 # pam_rhosts_auth module is BSD with advertising
@@ -315,6 +315,9 @@ fi
 %doc doc/adg/*.txt doc/adg/html
 
 %changelog
+* Tue Mar 16 2009 Tomas Mraz <tmraz@redhat.com> 1.0.91-3
+- we must replace the stdin when execing the helper (#490644)
+
 * Mon Mar 16 2009 Tomas Mraz <tmraz@redhat.com> 1.0.91-2
 - do not close stdout/err when execing the helpers (#488147)